Yes, unfortunately I'm the younger brother of that great prat Sirius. I am the more respectable Black brother. My cousins, Narcissa and Bellatrix are also very respectable. Not so much my other cousin, Andromeda. Anyway, I'm a third year at Hogwarts School. Slytherin, of course.
Younger brother of Sirius, favored by his parents as he shared their pureblood prejudices, to the point that he joined the Death Eaters.